EwE linked stanza recruitment - a brief users guide

Occasionally, ecosystem modellers run into issues where gender-split populations need explicit modelling. This can occur when empirical data is only available for male or female specimens, or when males and females of key species have markedly different behaviours. We have made a small modification to the Ecopath with Ecosim (EwE) multi-stanza model (Christensen and Walters, 2004), that allows linking recruitment to ensure proportional spawning between two multi-stanza groups, and thus connecting two gender-spilt populations at their foundation.